Geothermics

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Abstract

The Beowawe Geysers in north-central Nevada are the discharge from a hydrothermal-convection system in a region of high heat flow. The site of thermal-fluid upflow (at about 18 kg/s before drilling and well testing) appears to be related to the intersection at depth of two major fault zones. Assuming steady-state conditions, recharge within the drainage basin could account for both thermal and nonthermal ground-water discharge. Circulation of thermal fluid to depths exceeding 5 km is required to attain estimated temperatures of more than 220??C. ?? 1987.